1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c2f66e2b41347b41b25476bec12ac3b517c902f4556278adcdbdbd280aa20b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b067b4ae-ff77-4358-aacc-47228f64f3f7.json and https://artists.proofprofile.net/proofs/artist/b067b4ae-ff77-4358-aacc-47228f64f3f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d01b4701db75f624824c2ac364d639f6f32e039626344eab7c83c5d6456ccf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6HN2427743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d902421f52e39b8db509ba251cbaf24942af29834834c1106254958e6effb8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6HN2427745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045cd8cf31ef9c3f64886149f58248547ed3356806e151ee0792db4a80d6c23d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6HN2427746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49328be3b7005c2ed86410ed17135a7e2f777a6cfe557a6808d5fccb35255c5d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32487131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a7b5950184b1ceed6428a5059feb9524e1c69c5ba532d18a0916597f8ee7c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32487132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27b9b568163bb82b0b70d5630643029e6e1564285c28cfe5e2031e8f6aa48dc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32487133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7238330d54c1d15a0bd0e8d093ea1843b985c82c8e242ed1eac11ee06ec7a96a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32487134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2307d16dec7d99d556073a5d4ac8b26d29b6f16e7d96279fa23e301ab14a9e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32487135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc794b9d499b9060d73a2340fb49b3d741b035cc750ee0cd9a32785c87a8a8145. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32487136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e0262b60aa84adbd16cd8987dc3daacf4606c47cbade09e72a05189d57c8a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32487137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd2e296120c37c29e44ae9e5f30f6ec5285b883c38782a1240b6e0c44e5bb5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6I32487138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdabbf518e5c20517abc2bef8c881a18896d9fa70885609b13adc26fa2a15eb. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T16:20:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XX2381099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c961478eb6b0d30cdb634e3b795c36b78ea1b433a992e43a845250e079b29b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XX2377257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb327921abb4d29ea6af436497c2b54a2da838d8e18da22d0041b16411ff2191. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XX2348187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1afd922e973afbc8a8d4cbb2ae1bb62920c694a3888cc4a3d3e075553dea9e3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XY2371175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2609a7a8a3630fdf57a30fd651ded93e5af39bcfee757a566fccf9c2e206cf81. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6A92393982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bba4df27c336491c169d5390ca9d83faea0e9275261929795bc8639542be4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE66N2305220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd28e7840c6d5eaf12aa6bd491562bd5ea8996b6909bbda25f414fd09f4cb81. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XX2321091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f34630c401999a529ad38088bf84e1e8ab5b20cb65c04e7518a9dc042cbe91. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6XX2313209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ea482b684ca2ca6d47303cb820fa65aed6e0d153779b05ba9bff771e7d195f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6HN2483501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498be1f33b94dff5d6a6090f0b9b12bfc4d33f35c26326f34d6f14ce66c90a5d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5752498713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2368dee8977607ef8862b7bc74821c2c1068fa8e0a7ff9abc5c35855d1a7eb3b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6TI2323195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030b3497888eb8d4e8b3957ab272ca0a1a66d9559b24547a606f6568006516b1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5BU2301067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8acbd68937a1058fe5dd7f6763bd1e933fd2b7078f624732f364126dbf23379. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:27:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2358003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e49d9d88739aaf82420cb33063b2490f54421aa044e459b7eef0c622d0f6744. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42439703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde117ddda5fbcab84c3767a1292c355817d533ce0435987cc25e87f491e63145. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:20:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM22393068.